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package net.tylermurphy.ken.command;
import net.dv8tion.jda.api.EmbedBuilder;
import net.dv8tion.jda.api.JDA;
import net.dv8tion.jda.api.entities.Guild;
import net.dv8tion.jda.api.entities.GuildMessageChannel;
import net.dv8tion.jda.api.entities.Member;
import net.dv8tion.jda.api.entities.Message;
import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
import net.dv8tion.jda.api.events.interaction.component.ButtonInteractionEvent;
import net.dv8tion.jda.api.hooks.ListenerAdapter;
import net.dv8tion.jda.api.interactions.commands.build.Commands;
import net.dv8tion.jda.api.interactions.commands.build.OptionData;
import net.dv8tion.jda.api.interactions.commands.build.SlashCommandData;
import net.dv8tion.jda.api.interactions.components.buttons.Button;
import net.dv8tion.jda.api.requests.restaction.WebhookMessageAction;
import net.tylermurphy.ken.Ken;
import net.tylermurphy.ken.util.*;
import org.reflections.Reflections;
import org.reflections.scanners.MethodAnnotationsScanner;
import java.awt.*;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;
import java.util.List;
public class Responder extends ListenerAdapter {
private final Map<String, Container> register;
private final JDA api;
public Responder(JDA api) {
this.register = new HashMap<>();
this.api = api;
}
public void registerCommands() throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException, SecurityException {
// Reset register
register.clear();
// Get all Methods that use the @Command annotation
for (Method method : new Reflections("net.tylermurphy.ken.command", new MethodAnnotationsScanner()).getMethodsAnnotatedWith(Command.class)) {
if(method.getReturnType() != Response.class) continue;
// Register Main Command Information If Not Already Registered;
Command command = method.getAnnotation(Command.class);
if (register.containsKey(command.name())) continue;
// Create Command Container
Container container = new Container(method);
// Check For Permissions
if (method.isAnnotationPresent(Requirement.class))
container.setPermission(method.getAnnotation(Requirement.class).value());
// Add Command To Register
register.put(command.name(), container);
// Create Slash Command Data
SlashCommandData data = Commands.slash(command.name(), command.description());
// Add Options to Slash Command Data if @Option is used
if(method.isAnnotationPresent(Options.class)) {
Option[] options = method.getAnnotation(Options.class).value();
for(Option option : options){
data = data.addOption(option.type(), option.name(), option.description(), option.required());
}
} else if (method.isAnnotationPresent(Option.class)) {
Option option = method.getAnnotation(Option.class);
data = data.addOption(option.type(), option.name(), option.description(), option.required());
}
if(method.isAnnotationPresent(Selections.class)){
Selection[] selections = method.getAnnotation(Selections.class).value();
for(Selection selection : selections){
OptionData optionData = new OptionData(selection.type(), selection.name(), selection.description(), selection.required());
Arrays.stream(selection.choices()).forEach(choice -> optionData.addChoice(choice, choice.toLowerCase(Locale.ROOT)));
data.addOptions(optionData);
}
} else if(method.isAnnotationPresent(Selection.class)){
Selection selection = method.getAnnotation(Selection.class);
OptionData optionData = new OptionData(selection.type(), selection.name(), selection.description(), selection.required());
Arrays.stream(selection.choices()).forEach(choice -> optionData.addChoice(choice, choice.toLowerCase(Locale.ROOT)));
data.addOptions(optionData);
}
api.upsertCommand(data).queue();
}
// Get all Methods that use the @ButtonCallback annotation
for (Method method : new Reflections("net.tylermurphy.ken.command", new MethodAnnotationsScanner()).getMethodsAnnotatedWith(ButtonCallback.class)) {
if(method.getReturnType() != Response.class) continue;
ButtonCallback callback = method.getAnnotation(ButtonCallback.class);
if(!register.containsKey(callback.name())) continue;
Container container = register.get(callback.name());
container.setButtonCallback(method);
register.put(callback.name(), container);
}
}
public void onSlashCommandInteraction(SlashCommandInteractionEvent event) {
// Make sure the Bot can Talk
if(!event.getChannel().canTalk()) return;
// Bots are not allowed to use commands
if (event.getMember() == null || event.getUser().isBot()) return;
// Get Command Information From Invoke
final String invoke = event.getName().toLowerCase(Locale.ROOT);
if(!register.containsKey(invoke)) return;
Container container = register.get(invoke);
Method method = container.getMethod();
// Check Permissions
if(!event.getMember().hasPermission(container.getPermission())) {
EmbedBuilder builder = Ken.getInstance().getDefaultEmbed()
.appendDescription(":x: **Invalid Permissions**\n")
.appendDescription("You require the "+ container.getPermission().toString()+" permission to use this command.");
event.getHook().sendMessageEmbeds(builder.build()).queue();
return;
}
// Defer Reply
event.deferReply().queue();
// Get slash command options if there are any
List<Object> args = new ArrayList<>();
event.getOptions().forEach(option -> {
switch (option.getType()){
case STRING: args.add(option.getAsString()); break;
case INTEGER: args.add(option.getAsInt()); break;
case BOOLEAN: args.add(option.getAsBoolean()); break;
case USER: args.add(option.getAsMember()); break;
case CHANNEL: args.add(option.getAsChannel()); break;
case ROLE: args.add(option.getAsRole()); break;
case MENTIONABLE: args.add(option.getAsMentionable()); break;
default: break;
}
});
// Get parameters to send to Method
Object[] parameters = new Object[method.getParameterTypes().length];
Class<?>[] types = method.getParameterTypes();
for(int i = 0; i < types.length; i++){
if(types[i] == Member.class){
parameters[i] = event.getMember();
} else if(types[i] == GuildMessageChannel.class){
parameters[i] = event.getGuildChannel();
} else if(types[i] == Guild.class) {
parameters[i] = event.getGuild();
} else if(types[i] == List.class) {
parameters[i] = args;
} else {
parameters[i] = null;
}
}
// Invoke Method and Respond to User
try {
Object temp = method.invoke(container.getHandle(), parameters);
Response response = (Response)temp;
if(response.error()) {
EmbedBuilder builder = Ken.getInstance().getDefaultEmbed()
.setColor(Color.RED)
.setTitle(":x: **Error**")
.setDescription(response.getMessage());
event.getHook().sendMessageEmbeds(builder.build()).queue();
} else {
WebhookMessageAction<?> message;
if(response.hasEmbed()) {
message = event.getHook().sendMessageEmbeds(response.getEmbeds());
} else {
message = event.getHook().sendMessage(response.getMessage());
}
if(response.hasButtons()) message = message.addActionRow(response.getButtons());
if(response.hasFile()) message = message.addFile(response.getFile());
message.queue();
}
} catch (Exception e) {
EmbedBuilder builder = Ken.getInstance().getDefaultEmbed()
.setColor(Color.RED)
.setTitle(":x: **Error**")
.setDescription(e.getCause().getMessage());
event.getHook().sendMessageEmbeds(builder.build()).queue();
}
}
public void onButtonInteraction(ButtonInteractionEvent event) {
// Make sure the Bot can Talk
if(!event.getChannel().canTalk()) return;
// Bots are not allowed to use commands
if (event.getMember() == null || event.getUser().isBot()) return;
// Get Command Information From Invoke
final String invoke = event.getComponentId().toLowerCase(Locale.ROOT).split("_")[0];
if(!register.containsKey(invoke)) return;
Container container = register.get(invoke);
Method method = container.getButtonCallback();
// Defer Reply
event.deferEdit().queue();
// Get parameters to send to Method
Object[] parameters = new Object[method.getParameterTypes().length];
Class<?>[] types = method.getParameterTypes();
for(int i = 0; i < types.length; i++){
if(types[i] == Member.class){
parameters[i] = event.getMember();
} else if(types[i] == GuildMessageChannel.class){
parameters[i] = event.getGuildChannel();
} else if(types[i] == Guild.class) {
parameters[i] = event.getGuild();
} else if(types[i] == Button.class) {
parameters[i] = event.getButton();
} else if(types[i] == Message.class) {
parameters[i] = event.getMessage();
} else if(types[i] == String.class) {
parameters[i] = event.getComponentId().substring(invoke.length()+1);
} else {
parameters[i] = null;
}
}
// Invoke Method and Respond to User
try {
Object temp = method.invoke(container.getHandle(), parameters);
Response response = (Response) temp;
if(response.error()) {
EmbedBuilder builder = Ken.getInstance().getDefaultEmbed()
.setColor(Color.RED)
.setTitle(":x: **Error**")
.setDescription(response.getMessage());
event.getHook().sendMessageEmbeds(builder.build()).queue();
} else {
if(response.hasEmbed()) {
event.getHook().editOriginalEmbeds(response.getEmbeds()).queue();
} else {
event.getHook().editOriginal(response.getMessage()).queue();
}
}
} catch (Exception e) {
EmbedBuilder builder = Ken.getInstance().getDefaultEmbed()
.setColor(Color.RED)
.setTitle(":x: **Error**")
.setDescription(e.getCause().getMessage());
event.getHook().editOriginalEmbeds(builder.build()).queue();
}
}
}
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